     (+ a b)))
 
 
-[[:subsection {:title "Defining Vars: def" :tag "page 26" }]]
-"
-def defines or redifines a var with an optional value in the 
+[[:subsection {:title "Defining Vars: def  --  page 26"}]]
+"
+def defines or redifines a var with an optional value in the
 current namespace
 "
 (facts "def'ing vars"

  (fact (if (not true) \t)
    =>  nil))

"If a condition is false and no else expression is provided 
 the result will be 'nil'.

Other refinements of the if conditional:

(fact (let [{a :a b :b} m]
        (+ a b))
  => 11)

(facts "Keynames don't have to match"
  (fact
